Triorganotin derivatives of cyclic compounds



United States Patent Office 3,519,666 Patented July 7, 1970 3,519,666 TRIORGANOTIN DERIVATIVES F CYCLIC COMPOUNDS John P. Pellegrini, Jr., Pittsburgh, and Ilgvars J. Spilners,

Monroeville, Pa., assignors to Gulf Research & Development Company, Pittsburgh, Pa., a corporation of Delaware No Drawing. Filed Feb. 9, 1968, Ser. No. 704,248 Int. Cl. C07f 7/22 US. Cl. 260429.7 6 Claims ABSTRACT OF THE DISCLOSURE This invention relates to certain novel organometallic derivatives of cyclic compounds, and more particularly to triorganotin derivatives of cyclic compounds which are useful as insecticides.

The triorganotin derivatives of cyclic compounds of this invention are represented by the general formula where R is selected from the group consisting of aryl and alkaryl radicals; R and R are selected from the group consisting of alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals; and X is a cyclic radical selected from the group consisting of cyclopentenyl (C R H), cyclohexenyl (C R H--), cyclooctenyl (C R H-), indanyl (C R H-) and acenaphthenyl (C R H--) monovalent radicals where R is selected from the group consisting of hydrogen, alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals. Illustrative of the hydrocarbyl substituents represented by R, R R and R hereinabove are methyl; ethyl; propyl; isopropyl; n-butyl; sec-butyl; tertiary butyl; amyl; hexyl; heptyl n-octyl isooctyl nonyl decyl; undecyl; dodecyl; tridecyl; tetradecyl; pentadecyl; hexadecyl; heptadecyl; octadecyl; phenyl; naphthyl; benzyl; phenethyl; tolyl; xylyl; methylnaphthyl; ethylphenyl; propylphenyl; butylphenyl; amylphenyl; hexylphenyl; heptylphenyl; octylphenyl; nonylphenyl; diethylphenyl; dipropyl-, dibutyl-, diamyl-, dihexyl-, diheptyland dioctylphenyl; trialkylphenyl; tetraalkylphenyl; pentaalkylphenyl; cyclopentyl; cyclohexyl; cyclooctyl; alkylcycloalkyl; and the like.

The cyclopentenyl (C R H) cyclohexenyl cyclooctenyl (CgR H--), indanyl (C R H-) and acenaphthenyl (C R H) radicals referred to hereinabove are cyclic radicals which may be illustrated structurally as follows:

(cyclopentenyl) (acenaphthenyl) The R, R R and R substitutents referred to hereinabove can be like or unlike radicals within the prescribed limits for each substituent. Thus, for example, R, R R and R can be the same or diiferent aryl or alkaryl radicals. As a further illustration, R, can be an aryl or alkaryl radical while R and R arethe same or dilferent alkyl, alkaryl and cycloalkyl radicals and the R substituents (like or unlike) are selected from the group consisting of hydrogen, alkyl, alkaryl and cycloalkyl radicals. From the standpoint of ease in preparation and availability of starting materials, a preferred group of compounds are those wherein R R and R are like aryl radicals such as, for 5 example, phenyl radicals and the R substituents are hydrogen and/or lower alkyl radicals containing from 1 to 4 carbon atoms.

pounds of the invention are triphenyltin sec-butylcyclopentene triphenyltin tertiarybutylcyclopentene triphenyltin amylcyclopentene triphenyltin hexylcyclopentene triphenyltin heptylcyclopentene triphenyltin n-octylcyclopentene triphenyltin isooctylcyclopentene triphenyltin nonylcyclopentene triphenyltin decylcyclopentene triphenyltin undecylcyclopentene triphenyltin dodecylcyclopentene triphenyltin tridecylcyclopentene triphenyltin tetradecylcyclopentene triphenyltin pentadecylcyclopentene triphenyltin hexadecylcyclopentene triphenyltin heptadecylcyclopentene triphenyltin octadecylcyclopentene triphenyltin dimethylcyclopentene triphenyltin trimethylcyclopentene triphenyltin tetramethylcyclopentene triphenyltin pentamethylcyclopentene triphenyltin hexamethylcyclopentene triphenyltin methylethylcyclopentcne triphenyltin methylpropylcyclopentene triphenyltin methylbutylcyclopentene triphenyltin dimethyldibutylcyclopentene triphenyltin phenylcyclopentene triphenyltin naphthylcyclopentene triphenyltin benzylcyclopentene triphenyltin phenethylcyclopentene triphenyltin tolylcyclopentene triphenyltin xylylcyclopentene triphenyltin methylnaphthylcyclopentene triphenyltin ethylphenylcyclopentene triphenyltin propylphenylcyclopentene triphenyltin butylphenylcyclopentene triphenyltin amylphenylcyclopentene triphenyltin hexylphenylcyclopentene triphenyltin heptylphenylcyclopentene triphenyltin octylphenylcyclopentene triphenyltin nonylphenylcyclopentene triphenyltin diethylphenylcyclopentene triphenyltin dioctylphenylcyclopentene triphenyltin pentamethylphenylcyclopentene triphenyltin cyclopentylcyclopentene triphenyltin cyclohexylcyclopentene triphenyltin cyclooctylcyclopentene methyldiphenyltin cyclopentene dimethylphenyltin cyclopentene methylethylphenyltin cyclopentene methyldiphenyltin methylcyclopentene triphenyltin ethylcyclohexene triphenyltin isopropylcyclohexene triphenyltin n-butylcyclohexene triphenyltin isooctylcyclohexene triphenyltin dimethylcyclohexene triphenyltin tetramethylcyclohexene triphenyltin octamethylcyclohexene triphenyltin methethylcyclohexene triphenyltin isopropylmethylcyclohexene triphenyltin dimethyldibutylcyclohexene triphenyltin phenylcyclohexene triphenyltin naphthylcyclohexene triphenyltin benzylcyclohexene triphenyltin phenethylcyclohexene triphenyltin tolylcyclohexene triphenyltin xylylcyclohexene triphenyltin cyclopentylcyclohexene triphenyltin cyclohexylcyclohexene triphenyltin cyclooctylcyclohexene methyldiphenyltin cyclohexene dimethylphenyltin cyclohexene methylethylphenyltin cyclohexene methyldiphenyltin methylcyclohexene triphenyltin methylcyclooctene triphenyltin ethylcyclooctene triphenyltin isopropylcyclooctene triphenyltin n-butylcyclooctene triphenyltin isooctylcyclooctene triphenyltin dimethylcyclooctcne triphenyltin tetramethylcyclooctene triphenyltin octamethylcycloo ctene triphenyltin dodecamethylcyclooctene triphenyltin methylethylcyclooctene triphenyltin isopropylmethylcyclooctene triphenyltin dimethyldibutylcyclooctene triphenyltin phenylcyclooctene triphenyltin naphthylcyclooctene triphenyltin benzylcyclooctene triphenyltin phenethylcyclooctene triphenyltin tolylcyclooctene triphenyltin xylylcyclooctene triphenyltin cyclophenylcyclooctene triphenyltin cyclohexylcyclooctene triphenyltin cyclooctylcyclooctene methyldiphenyltin cyclooctene dimethylphenyltin cyclooctene methylethylphenyltin cyclooctene methyldiphenyltin methylcyclooctene triphenyltin methylindane triphenyltin ethylindane triphenyltin isopropylindane triphenyltin n-butylindane triphenyltin isooctylindane triphenyltin dimethylindane triphenyltin tetramethylindane triphenyltin octamethylindane triphenyltin methylethylindane triphenyltin dimethyldibutylindane triphenyltin phenylindane triphenyltin napththylindane triphenyltin benzylindane triphenyltin phenethylindane triphenyltin tolylindane triphenyltin xylylindane triphenyltin cyclopentylindane triphenyltin cyclohexylindane triphenyltin cyclooctylindane methyldiphenyltin indane dimethylphenyltin indane methylethylphenyltin indane methyldiphenyltin methylindane triphenyltin methylacenaphthene triphenyltin ethylacenaphthene triphenyltin isopropylacenaphthene triphenyltin n-butylacenaphthene triphenyltin isooctylacenaphthene triphenyltin dimethylacenaphthene triphenyltin tetramethylacenaphthene triphneyltin octamethylacenaphthene triphenyltin methylethylacenaphthene triphenyltin dimethyldibutylacenaphthene triphenyltin phenylacenaphthene triphenyltin naphthylacenaphthene tn'phenyltin benzylacenaphthene triphenyltin phenethylacenaphthene triphenyltin tolylacenaphthene triphenyltin xylylacenaphthene triphenyltin cyclopentylacenaphthene triphenyltin cyclohexylacenaphthene triphenyltin cyclooctylacenaphthene methyldiphenyltin acenaphthene dimethylphenyltin acenaphthene methylethylphenyltin acenaphthene methyldiphenyltin methylacenaphthene The novel organotin derivatives of the cyclic compounds of this invention are, in general, liquid or solid compounds, the solids meling at low or moderate temperatures. They are stable at ordinary temperatures and can be readily prepared and stored without special precautions for future use.

The compounds of the invention can be prepared in various ways. The compounds, for example, can be prepared by the addition of a triorganotin hydride to a cyclic olefin. Triphenyltin cyclopentene, for example, can be prepared by the addition of triphenyltin hydride to cyclopentadiene. Triphenyltin cyclohexene can be prepared by the addition of triphenyltin hydride to cyclohexadiene. Triphenyltin cyclooctene can be prepared by the addition of triphenyltin hydride to cyclooctadiene. Triphenyltin indane and triphenyltin acenaphthene can be prepared by the addition of triphenyltin hydride to indene and acenaphthylene, respectively. The triphenyltin derivatives of the hydrocarbyl-substituted cyclic olefins can be similarly prepared. Triphenyltin methylcyclopentene, for example, can be prepared by the addition of triphenyltin hydride to methylcyclopentadiene. Other triorganotin derivatives, including trialkaryltin, alkyldiaryltin, aralkyldiaryltin, alkaryldiaryltin, cycloalkyldiaryltin, aryldialkyltin, aryldiaralkyltin, aryldialkaryltin and trialkaryltin derivatives of cyclic olefins and hydrocarbyl-substituted cyclic olefins and hydrocarbyl substituted cyclic olefins can be similarly prepared. The addition reaction is preferably carried out with the reactants in a molten state or dissolved in an inert solvent under nitrogen at a temperature within the range of about 40 to about 100 C., generally between about 45 and 90 C. The reaction may be promoted also by ultraviolet light and by free radical initiators, such as azobis(isobutyronitrile). Completion of the reaction is generally favored by the presence of excess olefinic charge stock. The compounds of the invention can be recovered and purified according to known techniques including solvent extraction, filtration, recrystallization, or the like, dependent upon the nature of the particular compound in question.

In preparing the triorganotin derivatives of the cyclic compounds of the present invention, the initial reactants comprising the triorganotin hydrides and the cyclic olefins either are available commercially or can be readily prepared by known procedures so that neither of these reactants nor their method of preparation constitutes any portion of the invention. The triorganotin hydride, for example, can be prepared by reacting the corresponding triorganotin chloride with lithium aluminum hydride.

Examples of the triorganotin hydrides which are used in the present invention are:

Triphenyltin hydride, trinaphthyltin hydride, tritolyltin hydride, methyldiphenyltin hydride, ethyldiphenyltin hydride, propyldiphenyltin hydride, butyldiphenyltin hydride, amyldiphenyltin hydride, hexyldiphenyltin hydride, heptyldiphenyltin hydride, octyldiphenyltin hydride, nonyldiphenyltin hydride, decyldiphenyltin hydride, dodecyldiphenyltin hydride, tetradecyldiphenyltin hydride, octadecyldiphenyltin hydride, benzyldiphenyltin hydride, tolyldiphenyltin hydride, cyclopentyldiphenyltin hydride, phenyldimethyltin hydride, phenyldiethyltin hydride, phenyldiisopropyltin hydride, phenyldibutyltin hydride, phenyldiisooctyltin hydride, phenyldibenzyltin hydride, phenylditolyltin hydride, phenyldicyclopentyltin hydride, methylditolyltin hydride, ethylditolyltin hydride, propylditolyltin hydride, butylditolyltin hydride, octylditolyltin hydride, benzylditolyltin hydride, cyclopentylditolyltin hydride, tolyldimethyltin hydride, tolyldiethyltin hydride, tolyldiisopropyltin hydride, tolyldibutyltin hydride, tolyldiisooctyltin hydride, tolyldibenzyltin hydride, tolyldicyclopentyltin hydride, methylethylphenyltin hydride, methylethyltolyltin hydride, methylphenyltolyltin hydride, methylbenzylphenyltin hydride, methylcyclopentylphenyltin hydride.

Specific examples of some of the cyclic olefin starting materials to which the triorganotin hydrides are aded to produce compounds of the invention are:

cyclopentadiene, methylcyclopentadiene, ethylcyclopentadiene, n-propylcyclopentadiene, isopropylcyclopentadiene, n-butylcyclopentadiene, sec-butylcyclopentadiene, tertiary-butylcyclopentadiene, amylcyclopentadiene, hexylcyclopentadiene, heptylcyclopentadiene, noctylcyclopentadiene, isooctylcyclopentadiene, nonylcycyclopentadiene, decylcyclopentadiene, undecylcyclopentadiene, dodecylcyclopentadiene, tridecylcyclopentadiene, tetradecylcyclopentadiene, pentadecylcyclopentadiene, hexadecylcyclopentadiene, heptadecylcyclopentadiene, octadecylcyclopentadiene, dimethylcyclopentadiene, trimethylcyclopentadiene, tetramethylcyclopentadiene, pentamethylcyclopentadiene, hexamethylcyclopentadiene, methylethylcyclopent-adiene, methylpropylcyclopentadiene, methylbutylcyclopentadiene, dimethyldibutylcyclopentadiene, phenylcyclopentadienc, naphthylcyclopentadiene, benzylcyclopentadiene, phenethylcyclopentadiene, tolylcyclopentadiene, xylycyclopentadiene, cyclopentylcyclopentadiene, cyclohexylcyclopentadiene, cyclooctylcyclop'entadiene, cyclohexadiene.

Methylcyclohexadiene, ethylcyclohexadiene, isopropylcyclohexadiene, n-butylcyclohexadiene, isooctylcyclohexadiene, dimethylcyclohexadiene, tetramethylcyclohexadiene, octamethylcyclohexadiene, methylethylcyclohexadiene, isopropylmethylcyclohexadiene, dimethyldibutylcyclohexadiene, phenylcyclohexadiene, naphthylcyclohexadiene, benzylcyclohexadiene, phenethylcyclohexadiene, tolylcyclohexadiene, xylylcyclohexadiene, cyclopentylcyclohexadiene, cyclohexylcyclohexadiene, cyclooctylcyclohexadiene, cyclooctadiene, methylcyclooctadiene, ethylcyclooctadiene, isopropylcyclooctadiene, nbutylcyclooctadiene, isooctylcyclooctadiene, dimethylcyclooctadiene, tetramethylcyclooctadiene, octamethylcyclooctadiene, dodecamethylcyclooctadiene, methylethylcyclooctadiene, isopropylmethylcyclooctadiene, dimethyldi'butylcyclooctadiene, phenylcyclooctadiene, naphthylcyclooctadiene, benzylcyclooctadiene, phenethylcyclooctadiene, tolylcyclooctadiene, xylylcyclooctadiene, cyclopentylcyclooctadiene, cyclohexylcyclooctadiene, cyclooctylcyclooctadiene, indene, methylidene, ethylindene, isopropylidene, n-butylindene, isooctylindene, dimethylindene, tetramethylindene, octamethylindene, methylethylindene, dimethyldibutylindene, phenylindene, naphthylindene, benzylindene, phenethylindene, tolylindene, xylylindene, cyclopentylindene, cyclohexylindene, cyclooctylindene, acenaphthylene, methylacenaphthylene, ethylacenaphthylene, isopropylacenaphthylene, n-butylacenaphthylene, isooctylacenaphthylene, dimethyl'acenaphthylene, tetramethylacenaphthylene, octamethylacenaphthylene, methylethylacenaphthylene, dirnethyldibutylacenaphthylene, phenylacenaphthylene, naphthylacenaphthylene, benzylacen-aphthylene, phenethylacenaphthylene, tolylacenaphthylene, xylylacenaphthylene, cyclopentylacenaphthylene, cyclohexylacenaphthylene, cycloocetylacenaphthylene.

The following examples illustrate specific procedures by which compounds of the invention can be prepared.

7 EXAMPLE I Triphenyltin cyclopenten Triphenyltin hydride is prepared by adding 50 grams (0.13 mole) of triphenyltin chloride dissolved in 500 ml. of anhydrous ether to grams (0.13 mole) of lithium aluminum hydride in 250 ml. of anhydrous ether. The mixture is stirred and heated at the reflux temperature of ether (under nitrogen) for three hours. Then, 0.15 gram of hydroquinone, 25 ml. of water and 25 ml. of a aqueous solution of potassium sodium tartrate are added. The reaction mass is then filtered into a separatory funnel wherein an ether layer and an aqueous layer are formed. The aqueous layer is further extracted with ether. The ether solutions are combined, dried over a suitable drier such as Drierite, filtered and evaporated under nitrogen at room temperature. The residue obtained after removal of the ether consists of 35 grams (0.1 mole) of a colorless oil, which upon infrared examination has a band at 1860 CH1. 1 characteristic of Sn-H of triphenyltin hydride. The triphenyltin hydride thus obtained can be used immediately without further purification or it can be stored, preferably at a temperature below about 0 C. for subsequent use.

14 grams (0.04 mole) of triphenyltin hydride, obtained as described above, is dissolved in ml. of benzene. This solution is added to 3.3 grams (0.05 mole) of cyclopentadiene in 25 ml. of benzene. The mixture thus formed is stirred under nitrogen for three hours while the temperature is increased from 50 to 90 C. At the end of the three hour period, the benzene is almost completely evaporated. An infrared spectrum of the residue at this point shows a 'band at 1860 cm? indicating the presence of some unreacted hydride. To complete the reaction, 1.9 grams of additional cyclopentadiene is introduced and heating is continued for five hours at 45 to 65 C. The mixture is then cooled under a stream of nitrogen. The residue is extracted with hot 95% ethanol. On cooling, 12.0 grams of white crystals having a melting point of 82 C. are obtained. Elemental, infrared and mass spectrometric analysis of the white crystals show that the crystalline product comprises 3-triphenyltin cyclopentene (73% yield). A carbon, hydrogen and tin determination of the product shows a favorable comparison to the theoretical analysis for 3-triphenyltin cyclopentene as follows:

Ultimate analysis-Calculated for 3-triphenyltin cyclopentene C H Sn (percent): C, 66.35; H, 5.29; Sn,

28.36; M.W., 416.7. Found for product (percent): C,

66.55; H, 5.27; Sn, 27.40; M.W., 415

The NMR spectrum of the compound has a 15 phenyl H band at T283, 2 ethylene H band at 14.03 and 4.5, 1 methine H band at -r7.05, and 4 methylene H band at 77.75. The infrared spectrum (Nujol, Fluorolube) has bands at 3100, 2900-3000, 1480 (s.), 1425 (s.), 1300,

1250, 1225, 1155, 1090, 1070 (s.), 1020 (s.), 995 (s.), 900 (s.), 820, 720-730 (v.s.) and 698 (v.s.) cm? where (s.) is strong and (v.s.) is very strong.

EXAMPLE II (Triphenyltin methylcyclopentene) 30.5 grams (0.087 mole) of triphenyltin hydride, obtained as described in Example I, and 8 grams (0.1 mole) of freshly distilled methylcyclopentadiene are dissolved in 25 ml. of dry benzene. About 0.5 gram of azobis(isobutyronitrile) is added to the mixture which is then stirred and heated at 65 70 C. under nitrogen for 18 hours. Then the mixture is cooled, diluted with about 200 ml. of n-hexane and filtered. The filtrate is evaporated and the residue is dissolved in hot absolute ethanol. On cooling, 17 grams (0.0394 mole) of white crystals of tri phenyltin methylcyclopentene, having a melting point of 75-76 C. are collected (45% yield). A carbon, hydrogen and tin determination of the product shows a favor- 8 able comparison to the theoretical analysis for triphenyltin methylcyclopentene as follows:

Calculated for Found Triphenyltin for methylcyclopen- Ultimate Analysis Product tene Cz4H24Sn Carbon, percent 66. 55 66. 89 Hydrogen, percent.-- 5. 38 5. 57 Till, percent 26.81 27. 54 Molecular weight 430 431 EXAMPLE III Triphenyltin indane 16 grams (0.116 mole) of indene is added to 5 grams (0.0142 mole) of triphenyltin hydride, obtained as described in Example I, dissolved in 200 ml. of benzene. The solution is refluxed under nitrogen while allowing benzene gradually to escape. The mixture of indene and triphenyltin hydride is heated at 70 to C. for about 15 hours. A white solid forms and is dissolved in benzene. The solution is filtered after which a white crystalline solid is precipitated from the benzene filtrate by adding petroleum ether. The white crystals which are precipitated, 5.5 grams, are collected by filtration and dried in a vacuum desiccator. The crystals thus obtained melt at 164 C. Elemental, infrared and mass spectrometric analysis of the white crystals show that the crystalline product comprises triphenyltin indane (10% yield). A carbon, hydrogen and tin determination of the product shows a favorable comparison to the theoretical analysis for triphenyltin indane as follows:

Foutnd Calculated for The NMR spectrum of the compound has peaks at 72.55 (15 phenyl hydrogens), v2.81 (4 indanyl phenyl hydrogens), 76.6 and 6.7 (4 indanyl methylene hydrogens) and a quintet at T7.07.6 (indanyl methine hydrogen). This shows that the product is Z-triphenyltin indane. Two peaks at 76.1 and 6.3 suggest the presence of a small amount 10%) of 3-triphenyltin indane. The infrared spectrum (Nujol, Fluorolube) has bands at 3080 (w.), 2900-2950 (w.), 1450, 1425, 1300, 1250, 1210, 1125, 1070, 1060, 1020, 995, 980 (w.), 930 (w.), 915 (w.), 910 (w.), 750, 730 (s.) and 696 (s.) cm.- where (w.) is weak and (s.) is strong.

EXAMPLE IV Triphenyltin acenaphthene) 5 grams (0.0142 mole) of triphenyltin hydride, obtained as described in Example I, and 2 grams (0.0142 mole) of acenaphthylene are dissolved in 50 ml. of dry benzene and heated at 65 -70 C. under nitrogen with stirring for 20 hours. The reaction mixture is cooled, dissolved in ml. of benzene and filtered. The mixture is cooled and diluted With 200 ml. of n-hexane whereupon 5 grams of a white crystalline material, triphenyltin acenaphthene, having a melting point of 124 C. are obtained (70% yield). A carbon, hydrogen and tin determination of the product shows a favorable comparison to the theoretical analysis for triphenyltin acenaphthene as follows:

The NMR spectrum of the compound has a 21 phenyl H band centered at 12.8 and a 3 H (saturated hydrocarbon) band centered at 76.25. The infrared spectrum (Nujol, Fluorolube) has bands at 3100, 29003000, 1590-1610, 1450-1500, 1250, 1190, 1075 (s.), 1020, 1010, 1000 (s.), 955, 852, 840, 812 (v.s.), 785 (v.s.), 755 (s.), 725-730 (v.s.), and 695 (v.s.) where (s.) is strong and (v.s.) is very strong.

In order to illustrate the insecticidal properties of compounds of the invention, use has been made of a Microdrop Test Method, which is an advanced screening technique used in evaluating the insecticidal properties of compounds. In accordance with the microdrop procedure, the flies which are to be used in the test are first irnmobilized by placing them for 30 to 40 minutes in a refrigerator at 28 F. The flies are then counted into groups of 25 without regard to sex. The flies are then separately placed in groups of 25 in disposable cylindrical cages comprising waxed cardboard containers with a wire screen top. The cardboard containers are about A; inch in depth and 3 /2 inches in diameter. Four or five cages each of which contains 25 flies are placed in a vessel into which is introduced a constant stream of carbon dioxide. After being exposed to carbon dioxide for about eight to ten minutes, the (flies are again immobilized. The flies in an immobilized state are removed from the cages and each fly is separately contacted with an acetone or dimethylformamide solution of the test compound. The solution of the test compound is placed in a A cc. tuberculin syringe which is inserted in a microdrop applicator. The microdrop applicator is equipped with a hypodermic needle capable of delivering droplets consisting of one microliter of solution. The droplet is placed on the thorax or abdomen of the anesthetized fly. After all the flies in one container have been treated, the screen lid is replaced on the container which is then placed in a storage rack for twenty-four hours at 82:2" F. At the same time, control evaluations are made with untreated flies and with flies treated only with the solvent. During the twenty-four hour period, the flies are fed by means of a wad of cotton soaked in a 5 percent sugar solution which has been squeezed partially dry; the wad of cotton is placed on the screen lid of the container. After the twenty-four hour period, the flies are examined and the percent of dead flies is recorded.

When 0.5 gram of 3-triphenyltin cyclopentene of Example I was dissolved in 215 ml. of acetone and then applied to flies in accordance with the Microdrop Test described hereinabove, the kill of flies in 24 hours was 99%. When 0.5 gram of triphenyltin methylcyclopentene of Example II was dissolved in 25 ml. of acetone and similarly tested, the kill of flies in 24 hours was 96%.

While the above tests were made with acetone solutions, other solvents commonly employed in insecticide com:- positions can be employed if desired and when necessary to obtain complete solution. These solvents include light petroleum fractions such as deodorized naphthas and kerosenes; lubricating oils of light viscosity; aromatic hydrocarbons such as a benzene; toluene and alkyl naphthalenes such as a-methyl naphthalene; alcohols such as ethanol, propanol and butanol; and ketones including not only acetone but also methyl ethyl ketone.

While the compounds of the instant invention have insecticidal properties of their own, the compounds can be used in conjunction with other insecticide toxicants including pyrethrins and the like.

The compounds disclosed herein when used as insecticides are generally used in amounts of about 2,000 milligrams per cubic centimeters of solvent. When used in conjunction with pyrethrins, the compounds are used in amounts in the order of about 20 to about 2,000 milligrams per 100 cubic centimeters of solvent. The most useful proportion of pyrethrins are between about 20 and about 2,000 milligrams per 100 cubic centimeters of solvent.

While our invention has been described with reference to various specific examples and embodiments, it will be understood that the invention is not limited to such examples and embodiments and may be variously practiced within the scope of the claims hereinafter made.

We claim:

1. A triorganotin derivative of a cyclic compound represented by the general formula where R, is selected from the group consisting of aryl and alkaryl radicals; R and R are selected from the group consisting of alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals; and X is a cyclic radical selected from the group consisting of cyclopentenyl (C R H), cyclohexenyl (C R H-), cyclooctenyl (C R H), indanyl 9 a and acenaphthenyl (C R H) monovalent radicals where R is selected from the group consisting of hydrogen, alkyl, aryl, aralkyl, alkaryl and cycloalkyl radicals. 2. A triorganotin derivative of a cyclic compound rep resented by the general formula 1'11 Rg-Sfl-X Rs where R R and R are aryl radicals and X is a cyclic radical selected from the group consisting of cyclopentenyl (C R H), cyclohexenyl (C R H), cyclooctenyl (C R H-), indandyl (C R H-) and acenaphthenyl,

(C R H-) monovalent radicals where R is selected from the group consisting of hydrogen and alkyl radicals containing from 1 to 4 carbon atoms.

3. Tripenyltin cyclopentene.

4. Triphenyltin methylcyclopentene.

5. Thiphenyltin indane.

6. Triphenyltin acenaphthene.

References Cited FOREIGN PATENTS 1,198,362 8/1965 Germany. 1,212,531 3/ 1966 Germany. 1,214,237 4/ 1966 Germany.

OTHER REFERENCES Ingham et al., Chem. Reviews, vol. 60, #5, (1960), pp. 470-l, 260-429.7.

TOBIAS E. L-EVOW, Primary Examiner W. F. W. BELLAMY, Assistant Examiner US. Cl. X.R. 424288 Patent No.

Dated July 7, 1970 Inventor) John P, Pellegrini, Jr. and Ilgvars J. Spilners It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 1, line 23, "cycloocten, should read cyclooctene,

Column 4, line 1, "methethylcyclohexene" should read methylethylcyclohexene line 35, "cyclophenylcyclooctene" should read cyclopentylcyclooctene a Column 5, line 16, "meling" should read melting line 41, delete "and hydrocarbyl substituted cyclic olefins".

Column 6, line 72, "cycloocetyl" should read cyclooctyl- Column 7, line 2, "cyclopenten" should read cyclopentene SIGNED AN QEALE MT 20190 B Am Bilateral-WI G mm x. m.

Willi-B81028! Of hunt: 

